Bulk move from k8s.io/kubectl

vendor/github.com/json-iterator/go/extra/privat_fields.go

@@ -0,0 +1,25 @@
+package extra
+
+import (
+	"github.com/json-iterator/go"
+	"unicode"
+)
+
+// SupportPrivateFields include private fields when encoding/decoding
+func SupportPrivateFields() {
+	jsoniter.RegisterExtension(&privateFieldsExtension{})
+}
+
+type privateFieldsExtension struct {
+	jsoniter.DummyExtension
+}
+
+func (extension *privateFieldsExtension) UpdateStructDescriptor(structDescriptor *jsoniter.StructDescriptor) {
+	for _, binding := range structDescriptor.Fields {
+		isPrivate := unicode.IsLower(rune(binding.Field.Name()[0]))
+		if isPrivate {
+			binding.FromNames = []string{binding.Field.Name()}
+			binding.ToNames = []string{binding.Field.Name()}
+		}
+	}
+}